Speaker cabinet



FIG. 1 is a front elevational view of a speaker cabinet showing my new design;

FIG. 2 is a front, top and right side perspective view thereof; the left side being a mirror image of the right side shown herein; and

FIG. 3 is a rear elevational view thereof.

The bottom of the speaker cabinet is essentially flat and unornamented. 

The ornamental design for a speaker cabinet, as shown and described. 